Machine for making auger-blanks



(No Model.) 2 Sheets--Sheet 1.

O. O. TINKBR.

MAGHINE FOR MAKING AUGBR BLANKS.

N0. 280,098. Patented June 26, 1883.

INVENTOR 0 Jaw/M BY M ATTGRNEYS.

(No Model.) I 2 Sheets-Sheet 2. l v 0., O. TINKEB.

MAGHINE FOR MAKING AUGER BLANKS.

Patented June 26, 1883,

WITNESSES INVENTQR 34% E Q J w BY 7 ATTORNEYS.

UNITED STATES,

PAT NT OFFICE.

CHARLES O. TINKFJR, OF ASHTABULA, OHIO.

MACHINE FOR MAKlNG A UGER-BLANKS.

SPECIFICATION forming part of Letters Patent No. 280,098, dated June 26, 1883.

I Application filed July 24, 1882. (No model.)

To aZZ whom it may concern.-

Be it known that 1, CHARLES O. TINKER, of Ashtabula, in the county of Ashtabula and State of Ohio, have invented certain new and useful Improvements in Machines for Making Fig. 6 a face view of one of them.

Auger-Blanks, of which thefollowin g is a full, clear, and exact description.

This invention relates tothe rolling of anger-blanks, in place of producing them by hammering; and it consists in a certain construction of main dies applied to the rolls, and subsidiary or secondary dies inserted in and made removable from the main dies; also, in special driving and clutch mechanism for operating the rolls and timing the dies to the work, whereby I am enabled to fashion the rough blanks into finished ones with uniformity and dispatch, ready for their ultimate conversion into angers; also, the metal is so distributedthat no additions to theblanks, by welding or otherwise, are necessary, and other advantages are obtained, substantially ashoreinafter described.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of referenceindicate corresponding parts in all the figures.

Figure 1 represents a side elevation of a machine for making auger-blanks embodying my invention, with a portion of the clutch mechanism in section. Fig. 2 is an end clevation of the same. Fig. 3 is a horizontal section of the clutch mechanism in part. Fig. 4 is atransverse section, upon a larger scale, of the upper and lower rolls of the machine, with dies attached, and showing an auger-blank in the course of being operated on. Fig. 5 is a transverse section of the two main dies, and Fig. 7 is a longitudinal face view of one of the augerblanks as or before it is introduced to the machine, and Fig. 8 a transverse section of the same on the line'x m in Fig. 7. Fig. 9 is a longitudinal face view of the blank after it has been broken down and partly formed in the machine. Fig. 10 is a longitudinal face view of the blank after it has been finished in the machine, and Fig. 11 is a transverse section thereof on the line y y in Fig. 10. Fig. 12 is a longitudinal view of afinished anger as made from a blank produced in my machine.

A B in the drawings indicate upper and lower flanged rolls mounted in a suitable frame, O, and geared by pinions b I) to work in unison. Power to drive said rolls may be communicated to either one; but it is here shown applied to the lower one, as hereinaf ter described. Applied to these rolls A B, between. their flangesas, for instance, by a sliding dovetail lock or fit-aretwo segmental or other suitably-shaped main die-bl ocks, D D, of concentric curvature, with rolls on their outside faces, and pitched or arranged so that they work in rolling contact with each other. These dies are constructed with paralleltongues and grooves c c c and (Z (7 d on their convex 1 faces, in direction of the length of their arcs,

the tongues of either of saiddieblocks D D being made to correspond with the opposite grooves in the other, so that they will exactly fit or enter within each other to prevent the escape of metal in the blank between or at the sides of the grooves, and so that the tongues c c c on the die of the onesay the upper roll will, in their engagement with the grooves (l (l d in the die oft-he other or lower roll, form-a succession of passes or spaces, a c c", for the auger-blank under operation. The walls of these spaces, as formed by the convex bottoms of the said groovesd d (F in the one mai 11 die-block, 1'), and convex exteriors of thetongues c c c on the other main die-block, I),

are specially shaped to provide for the augerblank as it is successively passed through the spaces 0 e 0-. The number of these spaces or passes in the dies of the rolls may be changed, if desired; but for all practical purposes, and to produce the finished blank shown in Figs. 10 and 11, or as it issues from the dies, as shown in Fig. 9, from the rough or plain blank shown in Figs. 7 and 8, ready for converting, by twisting and otherwise, into the complete anger or auger-bit shown in Fig. 12, three of such. passes c c 0* will suffice, the first two of which are for breaking down the plain blank to prepare it for the final pass, 0'. The convex. surfaces of the tongues c c in the die-block D, and the bottoms of the grooves d d d in the die-block D, are mainly formed alike-that is to say, they are made reversely beveling from opposite sides, so as to make the passes e c c deepest in their centers, as

shown in Figs. 1 and 5, and with grooved protnberances f at one end to provide for reception of the augershank, and with depressions inside of the inner end otthe protuberaneesf. This gives a reverse or double-wedge form to the plain blank or its opposite sides or faces, with the greatest thickness in its center longitudinally, and with the necessary increase of metal near the shank, as shown in Figs. 9 and 10. The convex surface of the tongue 0 of the main die-block D, and bottom of the groove (l in the die-block D, forming the final pass 0*, are, however, further provided, near their rear ends, with other depressions, h h, (only seen in Fig. 6 as made in the die block D; but both dies are alike,) and intercepting point-forming and indenting secondary dies E E. These depressions 71. h and secondary dies E E give the necessary swells i i to the outer end of the blank and form the point It for the screw ofthe auger; also, said secondary dies cut off or nearly sever, so that it may be afterward broken off, the waste metal Z at the outer end of the finished blank. The construction of the main die-blocks D D, as described, distributes the metal. to different parts of the blank as required, especially to the part of the blank from which the head and cutting-edges of the auger are produced, and the combined dies serve to give the necessary finish to the blank without welding metal onto it to subsequently form the spurs, pointed screw, lips, and cutting-edges of the auger shown in Fig. 12. Of course angers of different sizes, and more or less of dilterent shapes, will require corresponding changes in the construction of the dies and in the depth and shape of the depres sions in them; but the same peculiarity of con struction will prevail throughout. Here it may be observed that the first two passes, 0 c, which are mainly for breaking downthe blank, are narrower than the final pass, inst as the finished blank shown in Figs. 9, 10, and 11 is wider than the plain blank shown in Figs. 7 and S,which plainblank, when the main dies D l) are by the turning of the rolls in receiving position, is passed first between. the tongue 0 and groove (1 of the one pass, 0, and successively between the tongue 0 and groove (1 and tongue (i and groove (1 of the passes c 0*. Each of these operations on the blank is separate and distinct from the other, and the blank requires to be properly heated for all of them.

The secondary or point-forming and indenting dies E E are inserted radially within or through the main dies D D at points so as to act upon the end portion of the body or broad part of the blank, and may rest at theirinner ends against the bodies of the rolls. Said sec ondary dies are made slightly tapering ontward, so that they can be readily raised and removed from the sliding and adjustable or removable main dies for resharpening when necessary.

As hereinbefore described, the blank is acted upon successivelywithin the grooves 11 d d of the main die-block Das the two main diebloeks D D in or by the rotation of the rolls come in to position to receive theblank. I have found from actual experiment that it is not practicable or convenient to run the rolls continuously sufficiently slow for the operator to so place the blank in its proper place in the dies. ll consequently give the rolls an intermittent revolving motion'and apply thereto a controllable automatic clutch or st op without interrupt ing the continuous action of the driver, and so that the rolls will be stopped, and by their friction remain I stopped a sutlicient length of time during each revolution for the reception of the blank in its successive changes or passes between the main dies. The means represented for this purpose are constructed substantially as follows: F in Figs. 1 and 2 is a driving pulley or wheel arranged loosely upon the shaft of, say, the lower roll, 13. This wheel carries an outside face disk or portion constructedwith a recess, 'm, in its outer face, having a sloping back that is preferably faced with steel to resist the shock of a clutch-pin, a, that engages with it. Fast upon said rollshaft, outside of the pulley F, is another disk or wheel, G, through which the pin a slides, and is pressed inward by a spring, 0, to engage with the reeess m in the pulley F when ever a wedge, H, that is pressed downward by a spring, r, is raised for the purpose, said wedge or wedge-shaped bolt H being so arranged that when pressed down the head of the clutclrpin u, by striking 011 the inner surface of said wedge H during the rotationol' the disk Gr, causes said pin to be withdrawn from engagement with the wheel F. A stirrup or treadle mechanism, I J K, serves to lift the wedge H when required. hen an auger blank is to be inserted between the dies D D, the rolls A B have their motion automatically arrested by the withdrawal from en gagement with the continnonsly-revolving pulleyF of the elutclr pin a by the head of said pin striking the depressed wedge H, which is so arranged that said rolls are stopped when. their dies are in proper receiving position for the blank. After the insertion of the blank the operator presses down on the stirrup I and raises or releases the wedge H, which allows the clutch-pin n to enter the recess m in the pulley F, when said recess during the rotation of the pulley comes into engaging line or position with said pin. The operator having released his foot from the treadle I, the rolls are then rotated, in comm on with the pulley F, to secure the action of the dies on the blank; but after one revolution the clutch-pin n is again. automatically withdrawn by the wedge H from its engaging position to provide for the insertion of the auger-blank in the next groove of the lower main die, when the operation is repeated as before. This acti on is repeated until the blank shown inFig. 9 is produced by the operation of the tongue 0*, groove (1 and secondary dies E E on the blank.

I am aware that rolls having tongues and grooves in their workingesurfaces operating as dies to produce an article the counterpart of the recess between the tongue and the groove are old for various purposes, and that in some cases devices have been combined with said rolls for cutting the blanks into the required lengths and for tapering or pointing the ends so cut. Such, therefore, in the abstract, I do not claim, nor yet the clutch mechanism by itself or irrespective of its connection with the rolls and their dies; but,

Having thus fully described my invention,

I claim as new and desire to secure by Letters Patent-' 1. In a machine for rolling auger-blanks, the combination, with the rolls A B, of the removable main di e-blo cks D D, constructed with a series of parallel tongues and grooves for successive action on the auger-blank, as described, and jointly therewith the secondary removable pointing and cutting-off dies E E,

their one end, essentially as and for the purposes herein set forth.

3. The tongued and grooved main die-blocks D D, having their final pass, e", for the blank underoperation constructed to give increased depth at its center longitudinally, and with grooved protuberancesf and depressions g at or near its one end, and depressions h h near its opposite end, in combination with the pointing and cutting-off dies E E, substantially as shown and described, and for the purposes specified.

4. The combination of a treadle or stirrup mechanism with the wedge H and its controllingspring 4', the sliding clutch-pin n and its spring 0, the revolving disk or wheel G,throngh which said pin is fitted to slide, the loose revolving driving wheel or pulley F, constructed with an engaging-recess, m, for the pin 41, and the geared rolls A B, and the many parallel tongued and grooved die-blocks 1) D, fitted to or within sectional portions. of said rolls, substantially as and for the purposes herein described.

CHARLES O. TZINKER.

Witnesses:

CHAS. TINKER, B. H. RIOKARD. 

